Improvement in plows



N. G. PINNEY.

PLOW

Patented Dec. 14, 1875 'N. Pains, PHOT UNITED STATES PATENT QFFICE.

NORMAN G. PINNEY, OF NEW HUDSON, MICHIGAN.

IMPROVEMENT lN PLOWS.

Specification forming part of Letters Patent No. l71,166, dated December 14, 1875; application filed October 5, 1875.

To all whom it may concern Be it known that I, NORMAN G. PINNEY, of New Hudson, in the county of Oakland and State of Michigan, have invented an Improvement in Plows, of which the following is a specification 'The invention consists in casting upon the under side of the plow, at the angle between the mold-board and the land-side, a lug, extending from near the front ends of the landside, said lug having a recess adapted to receive a steel bar, and provided with a setscrew, so that the bar may be conveniently protruded such distance as may be desired, or changed end for end or side for side, as more fully hereinafter described.

In the drawings, Figure 1 is a perspective view of the plow, showing the mold-board and the point. Fig. 2 is a perspective view of the bottom or under side of the plow. Fig. 3 is a vertical section through the plow at :r m.

In the drawings, A represents the land-side of the plow, and E the mold-board. Upon the under front end of the plow, at the angle between the land-side and the mold-board, is

cast the lug B, which extends from the front.

end of the land-side a little distance to the rear, and has passing through it longitudinally a mortise, I), which mortisetapers a little wertically from front to rear, bemg largest at. the rear end. This mortise is adapted to receive a rectangular steel bar, G, pointed at each end, and of equal size throughout. This bar is held in position within said lug by a set-screw, D, whichpasses through the lug,

having its end pressing against the bar, and thus holding it firmly.

When it is desired to change the vertical inclination of the bar D, this is done by inserting a wedge above or below the bar, in the rear end of the mortise b. The mold-board is cut away at e to permit the passage of the bar 0.

Itwill be perceived that a long steel point is provided, of small firstcost, as merchant bar will answer the purpose, requiring no manipulation except sharpening, and adapted to be turned end for end or side for side, as required by wear, or protruded such distance as may be desired, or inclined vertically at various angles, all in a simple and convenient manner.

I am aware of the patents to John Ormiswith the land-side, and a set-screw, by means of which the point is adjustably secured, and adapted to be changed end for end or side for side, as shown and described.

NORMAN G. PINNEY. In presence of CHARLES J. HUNT, EDWARD BARTHEL. 

